The month’s sharpest science shots, selected by Nature ’s photo team.

The northern white rhinoceros is one of the world’s biggest animals, and one of the most endangered. Only two are known to be alive, both female. But scientific breakthroughs are raising hopes for ...

As humans continue to encroach on our planet, we are driving a mass extinction that some experts call a "biological holocaust." Since more and more species are dying, it creates an increasing number ...

“It’s like the rhino version of the Human Genome Project.” In 2011, Loring’s team created the first induced pluripotent stem cells from northern white rhinos. They have since been working with the San ...

In a groundbreaking effort to save the Northern White Rhino from the brink of extinction, scientists have embarked on an ambitious mission-implanting lab-created embryos into surrogate rhinos in hopes ...

Thought to be extinct in the wild, the Spix Macaw currently exists in captivity with their numbers in the dismally low 60 to ...

Rhino Caregiver Zachary Mutai with one of the northern white rhinos at Ol pejeta Conservancy in Lakipia County. The conservancy hosts the only three northern white rhinos remaining in the world.

SAN DIEGO (CNN) - The world's northern white rhinoceros population plunged by a quarter on Sunday with a death at the San Diego Zoo Safari Park. Nola, a 41-year-old northern white rhino, died after ...

Sudan, the last male northern white rhino, feeds himself inside an enclosure at Ol Pejeta Conservancy in Nanyuki, Kenya, on April 18, 2015. Sudan has died. (Sun Ruibo/Xinhua/Sipa USA/TNS) JOHANNESBURG ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

The near-extinct northern white rhino could be revived following a "crucial" genome breakthrough. It is one of the rarest animals on Earth, with just two females left and no natural way for the ...